sfrench/cifs-2.6.git
14 years agodrm/vmwgfx: Fix queries if no dma buffer thrashing is occuring.
Thomas Hellstrom [Sun, 21 Feb 2010 14:54:55 +0000 (14:54 +0000)]
drm/vmwgfx: Fix queries if no dma buffer thrashing is occuring.

Intercept query commands and apply relocations to their guest pointers.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agoMerge remote branch 'nouveau/for-airlied' of ../drm-nouveau-next into drm-linus
Dave Airlie [Tue, 23 Feb 2010 05:42:18 +0000 (15:42 +1000)]
Merge remote branch 'nouveau/for-airlied' of ../drm-nouveau-next into drm-linus

* 'nouveau/for-airlied' of ../drm-nouveau-next:
  drm/nv50: fix vram ptes on IGPs to point at stolen system memory
  drm/nv50: fix instmem binding on IGPs to point at stolen system memory
  drm/nv50: improve vram page table construction
  drm/nv50: more efficient clearing of gpu page table entries
  drm/nv50: make nv50_mem_vm_{bind,unbind} operate only on vram
  drm/nouveau: Fix up pre-nv17 analog load detection.

14 years agoMerge branch 'pcc' into release
Len Brown [Tue, 23 Feb 2010 05:39:00 +0000 (00:39 -0500)]
Merge branch 'pcc' into release

14 years agoMerge branches 'bugzilla-14207' and 'idle' into release
Len Brown [Tue, 23 Feb 2010 05:19:48 +0000 (00:19 -0500)]
Merge branches 'bugzilla-14207' and 'idle' into release

14 years agosh: wire up SET/GET_UNALIGN_CTL.
Paul Mundt [Tue, 23 Feb 2010 03:56:30 +0000 (12:56 +0900)]
sh: wire up SET/GET_UNALIGN_CTL.

This hooks up the SET/GET_UNALIGN_CTL knobs cribbing the bulk of it from
the PPC and ia64 implementations. The thread flags happen to be the
logical inverse of what the global fault mode is set to, so this works
out pretty cleanly. By default the global fault mode is used, with tasks
now being able to override their own settings via prctl().

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
14 years agoMerge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
Linus Torvalds [Tue, 23 Feb 2010 03:51:39 +0000 (19:51 -0800)]
Merge branch 'upstream' of git://ftp.linux-mips.org/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  MIPS: BCM47xx: Fix 128MB RAM support
  MIPS: Highmem: Fix build error

14 years agoMerge branch 'parisc/tracehook' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Tue, 23 Feb 2010 03:51:13 +0000 (19:51 -0800)]
Merge branch 'parisc/tracehook' of git://git./linux/kernel/git/frob/linux-2.6-roland

* 'parisc/tracehook' of git://git.kernel.org/pub/scm/linux/kernel/git/frob/linux-2.6-roland:
  Revert "parisc: HAVE_ARCH_TRACEHOOK"

14 years agofs/exec.c: fix initial stack reservation
Michael Neuling [Mon, 22 Feb 2010 20:44:24 +0000 (12:44 -0800)]
fs/exec.c: fix initial stack reservation

803bf5ec259941936262d10ecc84511b76a20921 ("fs/exec.c: restrict initial
stack space expansion to rlimit") attempts to limit the initial stack to
20*PAGE_SIZE.  Unfortunately, in attempting ensure the stack is not
reduced in size, we ended up not changing the stack at all.

This size reduction check is not necessary as the expand_stack call does
this already.

This caused a regression in UML resulting in most guest processes being
killed.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Cc: Anton Blanchard <anton@samba.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: James Morris <jmorris@namei.org>
Cc: Serge Hallyn <serue@us.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Jouni Malinen <j@w1.fi>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoefifb: fix framebuffer handoff
Marcin Slusarz [Mon, 22 Feb 2010 20:44:22 +0000 (12:44 -0800)]
efifb: fix framebuffer handoff

Commit 4410f3910947dcea8672280b3adecd53cec4e85e ("fbdev: add support for
handoff from firmware to hw framebuffers") didn't add fb_destroy
operation to efifb.  Fix it and change aperture_size to match size
passed to request_mem_region.

Addresses http://bugzilla.kernel.org/show_bug.cgi?id=15151

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Reported-by: Alex Zhavnerchik <alex.vizor@gmail.com>
Tested-by: Alex Zhavnerchik <alex.vizor@gmail.com>
Acked-by: Peter Jones <pjones@redhat.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agogeode-mfgpt: restore previous behavior for selecting IRQ
Jens Rottmann [Mon, 22 Feb 2010 20:44:20 +0000 (12:44 -0800)]
geode-mfgpt: restore previous behavior for selecting IRQ

geode-mfgpt: restore previous behavior for selecting IRQ

The MFGPT IRQ used to be, in order of decreasing priority,
 * IRQ supplied by the user as a boot-time parameter,
 * IRQ previously set by the BIOS or another driver,
 * default IRQ given at compile time.

Return to this behavior, which got broken when splitting the
MFGPT/clocksource driver for 2.6.33-rc1.

Signed-off-by: Jens Rottmann <JRottmann@LiPPERTEmbedded.de>
Acked-by: Andres Salomon <dilinger@collabora.co.uk>
Cc: Jordan Crouse <jordan.crouse@amd.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoidr: fix a critical misallocation bug, take#2
Tejun Heo [Mon, 22 Feb 2010 20:44:19 +0000 (12:44 -0800)]
idr: fix a critical misallocation bug, take#2

This is retry of reverted 859ddf09743a8cc680af33f7259ccd0fd36bfe9d
("idr: fix a critical misallocation bug") which contained two bugs.

* pa[idp->layers] should be cleared even if it's not used by
  sub_alloc() because it's used by mark idr_mark_full().

* The original condition check also assigned pa[l] to p which the new
  code didn't do thus leaving p pointing at the wrong layer.

Both problems have been fixed and the idr code has received good amount
testing using userland testing setup where simple bitmap allocator is
run parallel to verify the result of idr allocation.

The bug this patch fixes is caused by sub_alloc() optimization path
bypassing out-of-room condition check and restarting allocation loop
with starting value higher than maximum allowed value.  For detailed
description, please read commit message of 859ddf09.

Signed-off-by: Tejun Heo <tj@kernel.org>
Based-on-patch-from: Eric Paris <eparis@redhat.com>
Reported-by: Eric Paris <eparis@redhat.com>
Tested-by: Stefan Lippers-Hollmann <s.l-h@gmx.de>
Tested-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agokernel/sys.c: fix missing rcu protection for sys_getpriority()
Tetsuo Handa [Mon, 22 Feb 2010 20:44:16 +0000 (12:44 -0800)]
kernel/sys.c: fix missing rcu protection for sys_getpriority()

find_task_by_vpid() is not safe without rcu_read_lock().  2.6.33-rc7 got
RCU protection for sys_setpriority() but missed it for sys_getpriority().

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: "Paul E. McKenney" <paulmck@us.ibm.com>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agomemcg: fix oom killing a child process in an other cgroup
KAMEZAWA Hiroyuki [Mon, 22 Feb 2010 20:44:14 +0000 (12:44 -0800)]
memcg: fix oom killing a child process in an other cgroup

Presently the oom-killer is memcg aware and it finds the worst process
from processes under memcg(s) in oom.  Then, it kills victim's child
first.

It may kill a child in another cgroup and may not be any help for
recovery.  And it will break the assumption users have.

This patch fixes it.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Reviewed-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Acked-by: David Rientjes <rientjes@google.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agodrm/nv50: fix vram ptes on IGPs to point at stolen system memory
Ben Skeggs [Fri, 19 Feb 2010 22:10:11 +0000 (08:10 +1000)]
drm/nv50: fix vram ptes on IGPs to point at stolen system memory

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
14 years agodrm/nv50: fix instmem binding on IGPs to point at stolen system memory
Ben Skeggs [Fri, 19 Feb 2010 22:06:36 +0000 (08:06 +1000)]
drm/nv50: fix instmem binding on IGPs to point at stolen system memory

This also modifies the unused PRAMIN PT entries to be all zeroes, can't
really recall why I used 9/0 initially, just that it didn't work for
some reason.  It was likely masking a bug elsewhere that's since been
fixed.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
14 years agodrm/nv50: improve vram page table construction
Ben Skeggs [Thu, 11 Feb 2010 01:31:44 +0000 (11:31 +1000)]
drm/nv50: improve vram page table construction

This commit changes nouveau to construct PTEs which look very much like
the ones the binary driver creates.

I presume that filling multiple PTEs identically with length flags and
the physical address of the start of a block of VRAM is a hint to the
memory controller that it need not perform additional page table lookups
for that range of addresses.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
14 years agodrm/nv50: more efficient clearing of gpu page table entries
Ben Skeggs [Thu, 11 Feb 2010 00:25:53 +0000 (10:25 +1000)]
drm/nv50: more efficient clearing of gpu page table entries

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
14 years agodrm/nv50: make nv50_mem_vm_{bind,unbind} operate only on vram
Ben Skeggs [Thu, 11 Feb 2010 00:23:30 +0000 (10:23 +1000)]
drm/nv50: make nv50_mem_vm_{bind,unbind} operate only on vram

GART is handled elsewhere, no reason to have the code for it here too.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
14 years agodrm/nouveau: Fix up pre-nv17 analog load detection.
Francisco Jerez [Wed, 10 Feb 2010 18:25:58 +0000 (19:25 +0100)]
drm/nouveau: Fix up pre-nv17 analog load detection.

Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
14 years agosh: allow alignment fault mode to be configured at kernel boot.
Paul Mundt [Tue, 23 Feb 2010 02:48:50 +0000 (11:48 +0900)]
sh: allow alignment fault mode to be configured at kernel boot.

Follow the ARM change, which is what our alignment helpers are based on
in the first place.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
14 years agoPCIe PME: use pci_pcie_cap()
Kenji Kaneshige [Mon, 22 Feb 2010 05:13:39 +0000 (14:13 +0900)]
PCIe PME: use pci_pcie_cap()

Use pci_pcie_cap() instead of pci_find_capability() to get PCIe
capability offset. This reduces redundant search in PCI configuration
space.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI PM: Run-time callbacks for PCI bus type
Rafael J. Wysocki [Wed, 17 Feb 2010 22:44:58 +0000 (23:44 +0100)]
PCI PM: Run-time callbacks for PCI bus type

Introduce run-time PM callbacks for the PCI bus type.  Make the new
callbacks work in analogy with the existing system sleep PM
callbacks, so that the drivers already converted to struct dev_pm_ops
can use their suspend and resume routines for run-time PM without
modifications.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCIe PME: use pci_is_pcie()
Kenji Kaneshige [Mon, 22 Feb 2010 05:12:24 +0000 (14:12 +0900)]
PCIe PME: use pci_is_pcie()

Use pci_is_pcie() instead of looking at obsolete is_pcie field in
struct pci_dev.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI / ACPI / PM: Platform support for PCI PME wake-up
Rafael J. Wysocki [Wed, 17 Feb 2010 22:44:09 +0000 (23:44 +0100)]
PCI / ACPI / PM: Platform support for PCI PME wake-up

Although the majority of PCI devices can generate PMEs that in
principle may be used to wake up devices suspended at run time,
platform support is generally necessary to convert PMEs into wake-up
events that can be delivered to the kernel.  If ACPI is used for this
purpose, PME signals generated by a PCI device will trigger the ACPI
GPE associated with the device to generate an ACPI wake-up event that
we can set up a handler for, provided that everything is configured
correctly.

Unfortunately, the subset of PCI devices that have GPEs associated
with them is quite limited.  The devices without dedicated GPEs have
to rely on the GPEs associated with other devices (in the majority of
cases their upstream bridges and, possibly, the root bridge) to
generate ACPI wake-up events in response to PME signals from them.

Add ACPI platform support for PCI PME wake-up:
o Add a framework making is possible to use ACPI system notify
  handlers for run-time PM.
o Add new PCI platform callback ->run_wake() to struct
  pci_platform_pm_ops allowing us to enable/disable the platform to
  generate wake-up events for given device.  Implemet this callback
  for the ACPI platform.
o Define ACPI wake-up handlers for PCI devices and PCI root buses and
  make the PCI-ACPI binding code register wake-up notifiers for all
  PCI devices present in the ACPI tables.
o Add function pci_dev_run_wake() which can be used by PCI drivers to
  check if given device is capable of generating wake-up events at
  run time.

Developed in cooperation with Matthew Garrett <mjg@redhat.com>.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoACPI / ACPICA: Multiple system notify handlers per device
Rafael J. Wysocki [Wed, 17 Feb 2010 22:42:59 +0000 (23:42 +0100)]
ACPI / ACPICA: Multiple system notify handlers per device

Currently it only is possible to install one system notify handler
per namespace node, but this is not enough for PCI run-time power
management, because we need to install power management notifiers for
devices that already have hotplug notifiers installed.  While in
principle this could be handled at the PCI level, that would be
suboptimal due to the way in which the ACPI-based PCI hotplug code is
designed.

For this reason, modify ACPICA so that it is possible to install more
than one system notify handler per namespace node.  Namely, make
acpi_install_notify_handler(), acpi_remove_notify_handler() and
acpi_ev_notify_dispatch() use a list of system notify handler objects
associated with a namespace node.

Make acpi_remove_notify_handler() call acpi_os_wait_events_complete()
upfront to avoid a situation in which concurrent instance of
acpi_remove_notify_handler() removes the handler from under us while
we're waiting for the event queues to flush.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoACPI / PM: Add more run-time wake-up fields
Rafael J. Wysocki [Wed, 17 Feb 2010 22:41:49 +0000 (23:41 +0100)]
ACPI / PM: Add more run-time wake-up fields

Use the run_wake flag to mark all devices for which run-time wake-up
events may be generated by the platform.  Introduce a new wake-up
flag, always_enabled, for marking devices that should be permanently
enabled to generate run-time events.  Also, introduce a reference
counter for run-wake devices and a function that will initialize all
of the run-time wake-up fields for given device.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Len Brown <len.brown@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoACPI: Use GPE reference counting to support shared GPEs
Rafael J. Wysocki [Wed, 17 Feb 2010 22:41:07 +0000 (23:41 +0100)]
ACPI: Use GPE reference counting to support shared GPEs

ACPI GPEs may map to multiple devices.  The current GPE interface
only provides a mechanism for enabling and disabling GPEs, making
it difficult to change the state of GPEs at runtime without extensive
cooperation between devices.

Add an API to allow devices to indicate whether or not they want
their device's GPE to be enabled for both runtime and wakeup events.

Remove the old GPE type handling entirely, which gets rid of various
quirks, like the implicit disabling with GPE type setting. This
requires a small amount of rework in order to ensure that non-wake
GPEs are enabled by default to preserve existing behaviour.

Based on patches from Matthew Garrett <mjg@redhat.com>.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI PM: Make it possible to force using INTx for PCIe PME signaling
Rafael J. Wysocki [Wed, 17 Feb 2010 22:40:07 +0000 (23:40 +0100)]
PCI PM: Make it possible to force using INTx for PCIe PME signaling

Apparently, some machines may have problems with PCI run-time power
management if MSIs are used for the native PCIe PME signaling.  In
particular, on the MSI Wind U-100 PCIe PME interrupts are not
generated by a PCIe root port after a resume from suspend to RAM, if
the system wake-up was triggered by a PME from the device attached to
this port.  [It doesn't help to free the interrupt on suspend and
request it back on resume, even if that is done along with disabling
the MSI and re-enabling it, respectively.]  However, if INTx
interrupts are used for this purpose on the same machine, everything
works just fine.

For this reason, add a kernel command line switch allowing one to
request that MSIs be not used for the native PCIe PME signaling,
introduce a DMI table allowing us to blacklist machines that need
this switch to be set by default and put the MSI Wind U-100 into this
table.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI PM: PCIe PME root port service driver
Rafael J. Wysocki [Wed, 17 Feb 2010 22:39:08 +0000 (23:39 +0100)]
PCI PM: PCIe PME root port service driver

PCIe native PME detection mechanism is based on interrupts generated
by root ports or event collectors every time a PCIe device sends a
PME message upstream.

Once a PME message has been sent by an endpoint device and received
by its root port (or event collector in the case of root complex
integrated endpoints), the Requester ID from the message header is
registered in the root port's Root Status register.  At the same
time, the PME Status bit of the Root Status register is set to
indicate that there's a PME to handle.  If PCIe PME interrupt is
enabled for the root port, it generates an interrupt once the PME
Status has been set.  After receiving the interrupt, the kernel can
identify the PCIe device that generated the PME using the Requester
ID from the root port's Root Status register. [For details, see PCI
Express Base Specification, Rev. 2.0.]

Implement a driver for the PCIe PME root port service working in
accordance with the above description.

Based on a patch from Shaohua Li <shaohua.li@intel.com>.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI PM: Add function for checking PME status of devices
Rafael J. Wysocki [Wed, 17 Feb 2010 22:36:58 +0000 (23:36 +0100)]
PCI PM: Add function for checking PME status of devices

Add function pci_check_pme_status() that will check the PME status
bit of given device and clear it along with the PME enable bit.  It
will be necessary for PCI run-time power management.

Based on a patch from Shaohua Li <shaohua.li@intel.com>

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI: mark is_pcie obsolete
Kenji Kaneshige [Tue, 9 Feb 2010 03:21:27 +0000 (12:21 +0900)]
PCI: mark is_pcie obsolete

The "is_pcie" field in struct pci_dev is no longer needed because
struct pci_dev has PCIe capability offset in "pcie_cap" field and
(pcie_cap != 0) means the device is PCIe capable. This patch marks
"is_pcie" fields obsolete.

Current users of "is_pcie" field are:

- drivers/ssb/scan.c
- drivers/net/wireless/ath/ath9k/pci.c
- drivers/net/wireless/ath/ath5k/attach.c
- drivers/net/wireless/ath/ath5k/reset.c
- drivers/acpi/hest.c
- drivers/pci/pcie/pme/pcie_pme.c

Will post patches for each to use pci_is_pcie() as a follow-up.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI: set PCI_PREF_RANGE_TYPE_64 in pci_bridge_check_ranges
Yinghai Lu [Fri, 22 Jan 2010 09:02:28 +0000 (01:02 -0800)]
PCI: set PCI_PREF_RANGE_TYPE_64 in pci_bridge_check_ranges

Make pci_bridge_check_ranges() store the PCI_PREF_RANGE_TYPE_64 in
addition to IORESOURCE_MEM_64.  Just like pci_read_bridge_bases().

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI: pciehp: second try to get big range for pcie devices
Yinghai Lu [Fri, 22 Jan 2010 09:02:27 +0000 (01:02 -0800)]
PCI: pciehp: second try to get big range for pcie devices

Handle the case where the slot bridge that doesn't get a pre-allocated
resource big enough to handle its child resources..  For example pcie
devices need 256M, but the bridge only gets 2M preallocated.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI: pciehp: cleanup flow in pciehp_configure_device
Yinghai Lu [Fri, 22 Jan 2010 09:02:26 +0000 (01:02 -0800)]
PCI: pciehp: cleanup flow in pciehp_configure_device

Move bus_size_bridges and assign resources out of pciehp_add_bridge()
and do them all together, one time, including slot bridge, to avoid to
calling assign resources several times when there are several bridges
under the slot bridge.  Using pci_assign_unassigned_bridge_resources.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Reviewed-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI: introduce pci_assign_unassigned_bridge_resources
Yinghai Lu [Fri, 22 Jan 2010 09:02:25 +0000 (01:02 -0800)]
PCI: introduce pci_assign_unassigned_bridge_resources

For use by pciehp.

pci_setup_bridge() will not check enabled for the slot bridge, otherwise
update res is not updated to bridge BAR.  That is, bridge is already
enabled for port service.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Reviewed-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI: update bridge resources to get more big ranges in PCI assign unssigned
Yinghai Lu [Fri, 22 Jan 2010 09:02:24 +0000 (01:02 -0800)]
PCI: update bridge resources to get more big ranges in PCI assign unssigned

BIOS separates IO ranges between several IOHs, and on some slots, BIOS assigns
resources to a bridge, but stops assigning resources to the device under that
bridge, because the device needs a big resource.

So:
  1. allocate resources and record the failed device resources
  2. clear the BIOS assigned resources of the parent bridge of failing device
  3. go back and call pci assign unassigned
  4. if it still fails, go up the tree, clear more bridges. and try again

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI: don't shrink bridge resources
Yinghai Lu [Fri, 22 Jan 2010 09:02:23 +0000 (01:02 -0800)]
PCI: don't shrink bridge resources

When clearing leaf bridge resources, trying to get a big enough one, we
could shrink the bridge if there is no resource under it.  Confirm
against the old resource side to make sure we're increasing the
allocation.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI: reject mmio ranges starting at 0 on pci_bridge read
Yinghai Lu [Fri, 22 Jan 2010 09:02:22 +0000 (01:02 -0800)]
PCI: reject mmio ranges starting at 0 on pci_bridge read

We already track unassigned resources in struct resource, and this
prevents us from overwriting resource flags and info in the unassigned
case.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI: add failed_list to pci_bus_assign_resources
Yinghai Lu [Fri, 22 Jan 2010 09:02:21 +0000 (01:02 -0800)]
PCI: add failed_list to pci_bus_assign_resources

This allows us to track failed allocations for later re-trying with
reallocation.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Reviewed-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI: add pci_bridge_release_resources and pci_bus_release_bridge_resources
Yinghai Lu [Fri, 22 Jan 2010 09:02:20 +0000 (01:02 -0800)]
PCI: add pci_bridge_release_resources and pci_bus_release_bridge_resources

We use this in later patches to free resrouce ranges for reassignment in
an effort to support a wider variety of PCI topologies.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Reviewed-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI hotplug: check ioremap() return value in ibmphp_ebda.c
Andrew Morton [Tue, 2 Feb 2010 22:45:54 +0000 (14:45 -0800)]
PCI hotplug: check ioremap() return value in ibmphp_ebda.c

check ioremap() return value.

Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI hotplug: fix ibmphp build error
Randy Dunlap [Thu, 4 Feb 2010 20:12:23 +0000 (12:12 -0800)]
PCI hotplug: fix ibmphp build error

Add header file to fix build error:

drivers/pci/hotplug/ibmphp_hpc.c:135: error: implicit declaration of function 'init_MUTEX'
drivers/pci/hotplug/ibmphp_hpc.c:136: error: implicit declaration of function 'init_MUTEX_LOCKED'
drivers/pci/hotplug/ibmphp_hpc.c:797: error: implicit declaration of function 'down'
drivers/pci/hotplug/ibmphp_hpc.c:807: error: implicit declaration of function 'up'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI: Make pci_scan_slot more robust
Matthew Wilcox [Sun, 17 Jan 2010 21:01:41 +0000 (14:01 -0700)]
PCI: Make pci_scan_slot more robust

Yinghai pointed out that the new pci_scan_slot() crashes when called
on an ARI-capable slot that is empty.  Fix this by exiting early from
pci_scan_slot if there is no device in the slot.

Also make next_ari_func() robust against devices not existing in case
the ARI capability is corrupt.  ARI also requires that the devices be
listed in order, so if we find a function listed that is out of order,
stop scanning to prevent loops.

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI: hotplug/cpcihp, fix pci device refcounting
Jiri Slaby [Wed, 20 Jan 2010 13:15:54 +0000 (14:15 +0100)]
PCI: hotplug/cpcihp, fix pci device refcounting

Stanse found an ommitted pci_dev_put on one error path in
cpcihp_generic_init. The path is taken on !dev, but also when
dev->hdr_type != PCI_HEADER_TYPE_BRIDGE. However it omits to
pci_dev_put on the latter.

As it is fine to pass NULL to pci_dev_put, put it in there
uncoditionally.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Scott Murray <scott@spiteful.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI: push deprecated pci_find_device() function to last user
Tilman Schmidt [Mon, 18 Jan 2010 16:24:10 +0000 (17:24 +0100)]
PCI: push deprecated pci_find_device() function to last user

The ISDN4Linux HiSax driver family contains the last remaining users
of the deprecated pci_find_device() function. This patch creates a
private copy of that function in HiSax, and removes the now unused
global function together with its controlling configuration option,
CONFIG_PCI_LEGACY.

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI: don't dump resource when bus resource flags indicates unused
Yinghai Lu [Tue, 22 Dec 2009 23:02:24 +0000 (15:02 -0800)]
PCI: don't dump resource when bus resource flags indicates unused

Don't print out resources without flags to avoid cluttering up the debug
output.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoresource: add release_child_resources
Yinghai Lu [Tue, 22 Dec 2009 23:02:22 +0000 (15:02 -0800)]
resource: add release_child_resources

Useful for freeing a portion of the resource tree, e.g. when trying to
reallocate resources more efficiently.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI: separate pci_setup_bridge to small functions
Yinghai Lu [Tue, 22 Dec 2009 23:02:21 +0000 (15:02 -0800)]
PCI: separate pci_setup_bridge to small functions

This is a good cleanup in itself, and makes it easier to modify specific
resource types in later code.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI hotplug: ibmphp: read the length of ebda and map entire ebda region
Chandru [Mon, 11 Jan 2010 06:19:21 +0000 (11:49 +0530)]
PCI hotplug: ibmphp: read the length of ebda and map entire ebda region

ibmphp driver currently maps only 1KB of ebda memory area into kernel address
space during driver initialization. This causes kernel oops when the driver is
modprobe'd and it accesses memory beyond 1KB within ebda segment. The first
byte of ebda segment actually stores the length of the ebda region in
Kilobytes. Hence make use of the length parameter and map the entire ebda
region.

Signed-off-by: Chandru Siddalingappa <chandru@linux.vnet.ibm.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI hotplug: fix memory leaks
Jiri Slaby [Wed, 6 Jan 2010 16:47:56 +0000 (17:47 +0100)]
PCI hotplug: fix memory leaks

Stanse found a cut&pasted memory leak in pciehp_queue_pushbutton_work
and shpchp_queue_pushbutton_work. info is not freed/assigned on all
paths. Fix that.

Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoresource/PCI: mark struct resource as const
Dominik Brodowski [Fri, 1 Jan 2010 16:40:50 +0000 (17:40 +0100)]
resource/PCI: mark struct resource as const

Now that we return the new resource start position, there is no
need to update "struct resource" inside the align function.
Therefore, mark the struct resource as const.

Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoresource/PCI: align functions now return start of resource
Dominik Brodowski [Fri, 1 Jan 2010 16:40:49 +0000 (17:40 +0100)]
resource/PCI: align functions now return start of resource

As suggested by Linus, align functions should return the start
of a resource, not void. An update of "res->start" is no longer
necessary.

Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agox86/PCI: irq and pci_ids patch for Intel Cougar Point DeviceIDs
Seth Heasley [Wed, 13 Jan 2010 00:56:37 +0000 (16:56 -0800)]
x86/PCI: irq and pci_ids patch for Intel Cougar Point DeviceIDs

This patch adds the Intel Cougar Point (PCH) LPC and SMBus Controller DeviceIDs.

Signed-off-by: Seth Heasley <seth.heasley@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI: Clean up build for CONFIG_PCI_QUIRKS unset
Rafael J. Wysocki [Sat, 2 Jan 2010 21:57:24 +0000 (22:57 +0100)]
PCI: Clean up build for CONFIG_PCI_QUIRKS unset

Currently, drivers/pci/quirks.c is built unconditionally, but if
CONFIG_PCI_QUIRKS is unset, the only things actually built in this
file are definitions of global variables and empty functions (due to
the #ifdef CONFIG_PCI_QUIRKS embracing all of the code inside the
file).  This is not particularly nice and if someone overlooks
the #ifdef CONFIG_PCI_QUIRKS, build errors are introduced.

To clean that up, move the definitions of the global variables in
quirks.c that are always built to pci.c, move the definitions of
the empty functions (compiled when CONFIG_PCI_QUIRKS is unset) to
headers (additionally make these functions static inline) and modify
drivers/pci/Makefile so that quirks.c is only built if
CONFIG_PCI_QUIRKS is set.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI hotplug: remove obsolete usage of get_bus_speed from rpaphp hotplug ops
Jesse Barnes [Mon, 4 Jan 2010 23:44:10 +0000 (15:44 -0800)]
PCI hotplug: remove obsolete usage of get_bus_speed from rpaphp hotplug ops

No longer needed and causes build breakage.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI: Add support for reporting PCIe 3.0 speeds
Matthew Wilcox [Sun, 13 Dec 2009 13:11:35 +0000 (08:11 -0500)]
PCI: Add support for reporting PCIe 3.0 speeds

Add the 8.0 GT/s speed.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI: Add support for AGP in cur/max bus speed
Matthew Wilcox [Sun, 13 Dec 2009 13:11:34 +0000 (08:11 -0500)]
PCI: Add support for AGP in cur/max bus speed

Take advantage of some gaps in the table to fit in support for AGP speeds.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI: Add support for detection of PCIe and PCI-X bus speeds
Matthew Wilcox [Sun, 13 Dec 2009 13:11:33 +0000 (08:11 -0500)]
PCI: Add support for detection of PCIe and PCI-X bus speeds

Both PCIe and PCI-X bridges report their secondary bus speed in their
respective capabilities.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI: Make current and maximum bus speeds part of the PCI core
Matthew Wilcox [Sun, 13 Dec 2009 13:11:32 +0000 (08:11 -0500)]
PCI: Make current and maximum bus speeds part of the PCI core

Move the max_bus_speed and cur_bus_speed into the pci_bus.  Expose the
values through the PCI slot driver instead of the hotplug slot driver.
Update all the hotplug drivers to use the pci_bus instead of their own
data structures.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI: Unify pcie_link_speed and pci_bus_speed
Matthew Wilcox [Sun, 13 Dec 2009 13:11:31 +0000 (08:11 -0500)]
PCI: Unify pcie_link_speed and pci_bus_speed

These enums must not overlap anyway, since we only have a single
pci_bus_speed_strings array.  Use a single enum, and move it to
pci.h.  Add 'SPEED' to the pcie names to make it clear what they are.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI: Rewrite pci_scan_slot
Matthew Wilcox [Sun, 13 Dec 2009 13:10:02 +0000 (08:10 -0500)]
PCI: Rewrite pci_scan_slot

The Alternate Routing-ID Interpretation capability allows a single device
to have up to 256 functions.  They can be populated sparsely, so the
current technique of scanning every eighth function is not guaranteed
to find them all.  By introducing a 'next_fn' function pointer, we can
use the linked list of functions in the ARI capability to scan all the
functions which exist.

We can then speed up the pci_scan_slot by skipping the scan of subsequent
devfns for PCIe devices which are the direct children of Root Ports or
Downstream Ports.  These devices are only permitted to implement device
0, unless they are ARI devices, in which case they'll be scanned by the
ARI code above.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoMIPS: BCM47xx: Fix 128MB RAM support
Hauke Mehrtens [Sat, 20 Feb 2010 18:51:20 +0000 (19:51 +0100)]
MIPS: BCM47xx: Fix 128MB RAM support

Ignoring the last page when ddr size is 128M. Cached accesses to last page
is causing the processor to prefetch using address above 128M stepping out
of the DDR address space.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/981/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
14 years agoMIPS: Highmem: Fix build error
Yoichi Yuasa [Sat, 20 Feb 2010 12:23:22 +0000 (21:23 +0900)]
MIPS: Highmem: Fix build error

arch/mips/mm/highmem.c: In function 'kmap_init':
arch/mips/mm/highmem.c:130: error: 'init_mm' undeclared (first use in this function)
arch/mips/mm/highmem.c:130: error: (Each undeclared identifier is reported only once
arch/mips/mm/highmem.c:130: error: for each function it appears in.)

Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
Cc: linux-mips <linux-mips@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/980/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
14 years agoRevert "parisc: HAVE_ARCH_TRACEHOOK"
Roland McGrath [Mon, 22 Feb 2010 18:43:43 +0000 (10:43 -0800)]
Revert "parisc: HAVE_ARCH_TRACEHOOK"

This reverts commit 81bf550d9cdfe0325eb1504b06c9f6511b442c1a.

HAVE_ARCH_TRACEHOOK requires defining the user_regset interfaces,
including task_user_regset_view().  parisc doesn't do that yet,
so don't lie about it.

Signed-off-by: Roland McGrath <roland@redhat.com>
14 years agoACPI: Be in TS_POLLING state during mwait based C-state entry
Pallipadi, Venkatesh [Wed, 10 Feb 2010 18:35:31 +0000 (10:35 -0800)]
ACPI: Be in TS_POLLING state during mwait based C-state entry

ACPI deep C-state entry had a long standing bug/missing feature, wherein we were sending
resched IPIs when an idle CPU is in mwait based deep C-state. Only mwait based C1 was using
the write to the monitored address to wake up mwait'ing CPU.

This patch changes the code to retain TS_POLLING bit if we are entering an mwait based
deep C-state.

The patch has been verified to reduce the number of resched IPIs in general and also
improves the performance/power on workloads with low system utilization (i.e., when mwait based
deep C-states are being used).

Fixes "netperf ~50% regression with 2.6.33-rc1, bisect to 1b9508f"
http://marc.info/?l=linux-kernel&m=126441481427331&w=4

Reported-by: Lin Ming <ming.m.lin@intel.com>
Tested-by: Alex Shi <alex.shi@intel.com>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
14 years agoMerge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Mon, 22 Feb 2010 16:55:32 +0000 (08:55 -0800)]
Merge branch 'perf-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf probe: Init struct probe_point and set counter correctly
  hw-breakpoint: Keep track of dr7 local enable bits
  hw-breakpoints: Accept breakpoints on NULL address
  perf_events: Fix FORK events

14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Mon, 22 Feb 2010 16:48:06 +0000 (08:48 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: usbtouchscreen - extend coordinate range for Generaltouch devices
  Input: polldev can cause crash in case when polling disabled

14 years agoi915 / PM: Fix hibernate regression caused by suspend/resume splitting
Rafael J. Wysocki [Thu, 18 Feb 2010 22:06:27 +0000 (23:06 +0100)]
i915 / PM: Fix hibernate regression caused by suspend/resume splitting

Commit 84b79f8d2882b0a84330c04839ed4d3cefd2ff77 (drm/i915: Fix crash
while aborting hibernation) attempted to fix a regression introduced
by commit cbda12d77ea590082edb6d30bd342a67ebc459e0 (drm/i915:
implement new pm ops for i915), but it went too far trying to split
the freeze/suspend and resume/thaw parts of the code.  As a result,
it introduced another regression, which only is visible on some systems.

Fix the problem by merging i915_drm_suspend() with
i915_drm_freeze() and moving some code from i915_resume()
into i915_drm_thaw(), so that intel_opregion_free() and
intel_opregion_init() are also executed in the freeze and thaw code
paths, respectively.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reported-and-tested-by: Pedro Ribeiro <pedrib@gmail.com>
Tested-by: Tino Keitel <tino.keitel@tikei.de>
Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoiwlwifi: sanity check before counting number of tfds can be free
Stanislaw Gruszka [Fri, 19 Feb 2010 23:47:33 +0000 (15:47 -0800)]
iwlwifi: sanity check before counting number of tfds can be free

Check the frame control for ieee80211_is_data_qos() is true before
counting the number of tfds can be free, the tfds_in_queue only
increment when ieee80211_is_data_qos() is true before transmit; so it
should only decrement if the type match.

Remove ieee80211_is_data_qos check for frame_ctrl in tx_resp to avoid
invalid information pass from uCode.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
CC: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoiwlwifi: error checking for number of tfds in queue
Wey-Yi Guy [Fri, 19 Feb 2010 23:47:32 +0000 (15:47 -0800)]
iwlwifi: error checking for number of tfds in queue

When receive reply_tx and ready to decrement the count for number of
tfds in queue, do error checking to prevent error condition and
tfds_in_queue become negative number.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
CC: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoperf probe: Init struct probe_point and set counter correctly
Masami Hiramatsu [Thu, 18 Feb 2010 18:16:52 +0000 (13:16 -0500)]
perf probe: Init struct probe_point and set counter correctly

Clear struct probe_point before using it in
show_perf_probe_events(), and set pp->found counter correctly in
synthesize_perf_probe_point(). Without this initialization,
clear_probe_point() will free random addresses.

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: systemtap <systemtap@sources.redhat.com>
Cc: DLE <dle-develop@lists.sourceforge.net>
LKML-Reference: <20100218181652.26547.57790.stgit@dhcp-100-2-132.bos.redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agosh: sh7724: Update FSI/SPU2 clock
Kuninori Morimoto [Mon, 22 Feb 2010 05:18:10 +0000 (05:18 +0000)]
sh: sh7724: Update FSI/SPU2 clock

When FSI and Network (= NFS file system) were used at the same time,
the I/O of FSI was unstable.  This patch updates the SPU2 clock (which
is used for FSI) to solve this issue.  Special thanks to Jeremy.

Signed-off-by: Jeremy Baker <Jeremy.Baker@renesas.com>
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
14 years agosh: always enable sh7724 vpu_clk and set to 166MHz on Ecovec
Magnus Damm [Fri, 19 Feb 2010 09:33:47 +0000 (09:33 +0000)]
sh: always enable sh7724 vpu_clk and set to 166MHz on Ecovec

Update the sh7724 processor code to always enable vpu_clk.

On the Ecovec board, set the vpu_clk to 166 Mhz.

The 166MHz setting results in a divide-by-6 setup for
vpu_clk and improves the VPU performance compared to the
power-on-reset/bootloader configuration.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
14 years agosh: add sh7724 kick callback to clk_div4_table
Magnus Damm [Fri, 19 Feb 2010 09:26:56 +0000 (09:26 +0000)]
sh: add sh7724 kick callback to clk_div4_table

This patch adds a ->kick() callback to clk_div4_table
and ties it into sh_clk_div4_set_rate(). A sh7724
specific kick function is also added that updates the
KICK bit whenever div4 clocks in FRQCRA and FRQCRB
have been set. Allows us to set the VPU clock.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
14 years agosh: introduce struct clk_div4_table
Magnus Damm [Fri, 19 Feb 2010 09:22:25 +0000 (09:22 +0000)]
sh: introduce struct clk_div4_table

This patch introduces struct clk_div4_table. The structure
will be used to keep div4 specific data, and is with this
patch replacing the struct clk_div_mult_table pointer arg
used by the sh_clk_div4_register() functions.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
14 years agosh: clock-cpg div4 set_rate() shift fix
Magnus Damm [Fri, 19 Feb 2010 09:12:00 +0000 (09:12 +0000)]
sh: clock-cpg div4 set_rate() shift fix

Make sure the div4 bitfield is shifted according
to the enable_bit value in sh_clk_div4_set_rate().

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
14 years agoInput: usbtouchscreen - extend coordinate range for Generaltouch devices
Roy Yin [Mon, 22 Feb 2010 06:52:49 +0000 (22:52 -0800)]
Input: usbtouchscreen - extend coordinate range for Generaltouch devices

Generaltouch protocol allows for coordinates in [0, 0xffff] range and
there are devices reporting coordinates as high as 0x7fff so let's update
the driver to reflect that.

Signed-off-by: Roy Yin <yhch@generaltouch.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
14 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
Linus Torvalds [Mon, 22 Feb 2010 03:45:24 +0000 (19:45 -0800)]
Merge git://git./linux/kernel/git/davem/sparc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc32: Fix struct stat uid/gid types.

14 years agosparc32: Fix struct stat uid/gid types.
David S. Miller [Mon, 22 Feb 2010 02:03:16 +0000 (18:03 -0800)]
sparc32: Fix struct stat uid/gid types.

Commit 085219f79cad89291699bd2bfb21c9fdabafe65f
("sparc32: use proper types in struct stat")

Accidently changed the struct stat uid/gid members
to uid_t and gid_t, but those get set to
__kernel_uid32_t and __kernel_gid32_t respectively.
Those are of type 'int' but the structure is meant
to have 'short'.  So use uid16_t and gid16_t to
correct this.

Reported-by: Rob Landley <rob@landley.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog
Linus Torvalds [Sun, 21 Feb 2010 19:25:47 +0000 (11:25 -0800)]
Merge git://git./linux/kernel/git/wim/linux-2.6-watchdog

* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
  [WATCHDOG] bfin: fix max timeout calculation

14 years ago[WATCHDOG] bfin: fix max timeout calculation
Mike Frysinger [Tue, 16 Feb 2010 00:32:25 +0000 (19:32 -0500)]
[WATCHDOG] bfin: fix max timeout calculation

Relying on overflow/wrap around isn't exact because if you wrap far
enough, you get back to "valid" values.

Reported-by: Thorsten Pohlmann <pohlmann@tetronik.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Cc: stable <stable@kernel.org>
14 years agomm: Make copy_from_user() in migrate.c statically predictable
H. Peter Anvin [Fri, 19 Feb 2010 00:13:40 +0000 (16:13 -0800)]
mm: Make copy_from_user() in migrate.c statically predictable

x86-32 has had a static test for copy_on_user() overflow for a while.
This test currently fails in mm/migrate.c resulting in an
allyesconfig/allmodconfig build failure on x86-32:

In function ‘copy_from_user’,
    inlined from ‘do_pages_stat’ at
    /home/hpa/kernel/git/mm/migrate.c:1012:
/home/hpa/kernel/git/arch/x86/include/asm/uaccess_32.h:212: error:
    call to ‘copy_from_user_overflow’ declared

Make the logic more explicit and therefore easier for gcc to
understand.

v2: rewrite the loop entirely using a more normal structure for a
    chunked-data loop (Linus Torvalds)

Reported-by: Len Brown <lenb@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Reviewed-and-Tested-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Arjan van de Ven <arjan@linux.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
Linus Torvalds [Sun, 21 Feb 2010 00:58:03 +0000 (16:58 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
  CacheFiles: Fix a race in cachefiles_delete_object() vs rename
  vfs: don't call ima_file_check() unconditionally in nfsd_open()
  fs: inode - remove 8 bytes of padding on 64bits allowing 1 more objects/slab under slub
  Switch proc/self to nd_set_link()
  fix LOOKUP_FOLLOW on automount "symlinks"

14 years agoMerge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
Linus Torvalds [Sun, 21 Feb 2010 00:56:09 +0000 (16:56 -0800)]
Merge branch 'v4l_for_linus' of git://git./linux/kernel/git/mchehab/linux-2.6

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6:
  V4L/DVB: bttv: Move I2C IR initialization
  V4L/DVB: Video : pwc : Fix regression in pwc_set_shutter_speed caused by bad  constant => sizeof conversion.
  soc-camera: mt9t112: modify exiting conditions from standby mode
  V4L/DVB: cxusb: Select all required frontend and tuner modules
  V4L/DVB: dvb: l64781.ko broken with gcc 4.5

14 years agoMerge branch 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 21 Feb 2010 00:55:41 +0000 (16:55 -0800)]
Merge branch 'omap-fixes-for-linus' of git://git./linux/kernel/git/tmlind/linux-omap-2.6

* 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6:
  omap: Remove DEBUG_FS dependency for mux name checking

14 years agoMerge master.kernel.org:/home/rmk/linux-2.6-arm
Linus Torvalds [Sun, 21 Feb 2010 00:55:05 +0000 (16:55 -0800)]
Merge master.kernel.org:/home/rmk/linux-2.6-arm

* master.kernel.org:/home/rmk/linux-2.6-arm:
  ARM: allow alignment fault mode to be configured at kernel boot
  ARM: Update mach-types
  ARM: 5951/1: ARM: fix documentation of the PrimeCell bus
  ARM: 5950/1: ARM: Fix build error for arm1026ej-s processor
  MAINTAINERS: fix my e-mail and status for Gemini and FA526
  Gemini: wrong registers used to set reg_level in gpio_set_irq_type()
  ARM: 5944/1: scsi: fix timer setup in fas216.c
  ARM: 5938/1: ARM: L2: export outer_cache_fns

14 years agoARM: allow alignment fault mode to be configured at kernel boot
Russell King [Sat, 20 Feb 2010 16:13:29 +0000 (16:13 +0000)]
ARM: allow alignment fault mode to be configured at kernel boot

Some glibc versions intentionally create lots of alignment faults in
their gconv code, which if not fixed up, results in segfaults during
boot.  This can prevent systems booting properly.

There is no clear hard-configurable default for this; the desired
default depends on the nature of the userspace which is going to be
booted.

So, provide a way for the alignment fault handler to be configured via
the kernel command line.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years agoCacheFiles: Fix a race in cachefiles_delete_object() vs rename
David Howells [Fri, 19 Feb 2010 18:14:21 +0000 (18:14 +0000)]
CacheFiles: Fix a race in cachefiles_delete_object() vs rename

cachefiles_delete_object() can race with rename.  It gets the parent directory
of the object it's asked to delete, then locks it - but rename may have changed
the object's parent between the get and the completion of the lock.

However, if such a circumstance is detected, we abandon our attempt to delete
the object - since it's no longer in the index key path, it won't be seen
again by lookups of that key.  The assumption is that cachefilesd may have
culled it by renaming it to the graveyard for later destruction.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
14 years agoARM: Update mach-types
Russell King [Sat, 20 Feb 2010 14:16:16 +0000 (14:16 +0000)]
ARM: Update mach-types

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years agoARM: 5951/1: ARM: fix documentation of the PrimeCell bus
Linus Walleij [Sat, 20 Feb 2010 08:41:30 +0000 (09:41 +0100)]
ARM: 5951/1: ARM: fix documentation of the PrimeCell bus

This fixes the filepath encoded in <linux/amba/bus.h> and adds
some documentation as to what this bus really means.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years agoARM: 5950/1: ARM: Fix build error for arm1026ej-s processor
Abdoulaye Walsimou Gaye [Fri, 19 Feb 2010 11:47:14 +0000 (12:47 +0100)]
ARM: 5950/1: ARM: Fix build error for arm1026ej-s processor

This patch fix the below build error for arm1026ej-s processor (IntegratorCP/arm1026ej-s board).
  CC      init/main.o
In file included from include/linux/highmem.h:8,
                 from include/linux/pagemap.h:10,
                 from include/linux/mempolicy.h:62,
                 from init/main.c:52:
arch/arm/include/asm/cacheflush.h:134:2: error: #error Unknown cache maintainence model
make[1]: *** [init/main.o] Erreur 1
make: *** [init] Erreur 2

Signed-off-by: Abdoulaye Walsimou Gaye <walsimou@walsimou.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years agoInput: polldev can cause crash in case when polling disabled
Samu Onkalo [Sat, 20 Feb 2010 07:17:58 +0000 (23:17 -0800)]
Input: polldev can cause crash in case when polling disabled

When polled input device is opened and closed and there are no other
users of polled device, the workqueue is created and destroyed in
every open / close operation. It is probable that at some point
dynamic allocation of internal parts of the workqueue cause changes to the
workqueue.

When a work is queued to the workqueue the work struct contains pointers
to the workqueue data. If the workqueue has been changed and the work
has never been queued to the new workqueue, work-struct contains pointers
to the non-existing workqueue. This will cause crash at the work
cancellation during device close since cancellation of a work assumes
that the workqueue exists.

To prevent that, work struct is cleaned up at device close. This keeps
work struct clean for the next use.

Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
14 years agovfs: don't call ima_file_check() unconditionally in nfsd_open()
Chuck Ebbert [Mon, 15 Feb 2010 23:07:39 +0000 (18:07 -0500)]
vfs: don't call ima_file_check() unconditionally in nfsd_open()

commit 1e41568d7378d1ba8c64ba137b9ddd00b59f893a ("Take ima_path_check()
in nfsd past dentry_open() in nfsd_open()") moved this code back to its
original location but missed the "else".

Signed-off-by: Chuck Ebbert <cebbert@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
14 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6
Linus Torvalds [Sat, 20 Feb 2010 03:35:20 +0000 (19:35 -0800)]
Merge git://git./linux/kernel/git/jejb/scsi-rc-fixes-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
  [SCSI] megaraid_sas: fix for 32bit apps
  [SCSI] fcoe: Only rmmod fcoe.ko if there are no active connections
  [SCSI] libfcoe: Send port LKA every FIP_VN_KA_PERIOD secs.
  [SCSI] libfc: Don't assume response request present.
  [SCSI] libfc: Fix e_d_tov ns -> ms scaling factor in PLOGI response.
  [SCSI] libfc: call ddp setup for only FCP reads to avoid accessing junk fsp pointer
  [SCSI] iscsi_tcp regression: remove bogus warn on in write path

14 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Sat, 20 Feb 2010 03:34:56 +0000 (19:34 -0800)]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
  sfc: SFE4002/SFN4112F: Widen temperature and voltage tolerances
  sfc: Fix sign of efx_mcdi_poll_reboot() error in efx_mcdi_poll()
  net-sysfs: Use rtnl_trylock in wireless sysfs methods.
  net: Fix sysctl restarts...

14 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
Linus Torvalds [Sat, 20 Feb 2010 03:34:40 +0000 (19:34 -0800)]
Merge git://git./linux/kernel/git/davem/sparc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc64: Fix sun4u execute bit check in TSB I-TLB load.
  sparc: Fix incorrect comparison in of_bus_ambapp_match()
  sparc64: Sync of_create_pci_dev() with drivers/pci/probe.c changes.
  sparc64: Tighten checks in kstack_valid().

14 years agoMerge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
Linus Torvalds [Sat, 20 Feb 2010 03:33:51 +0000 (19:33 -0800)]
Merge branch 'drm-linus' of git://git./linux/kernel/git/airlied/drm-2.6

* 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/radeon: bump the UMS driver version number to indicate rv740 fix
  drm/radeon/kms: free fence IB if it wasn't emited at IB free time
  drm/ttm: fix caching problem on non-PAT systems.
  drm/radeon/rv740: fix backend setup
  drm/radeon/kms: fix shared ddc detection
  drm/radeon/kms/rs600: add connector quirk
  vgaarb: fix "target=default" passing

14 years agosfc: SFE4002/SFN4112F: Widen temperature and voltage tolerances
Ben Hutchings [Fri, 19 Feb 2010 13:34:03 +0000 (13:34 +0000)]
sfc: SFE4002/SFN4112F: Widen temperature and voltage tolerances

The temperature and voltage limits currently set on these boards are
too conservative and will cause the driver to stop the net device
erroneously in some systems.

Based on a review of the chip datasheets and advice from the designer
of these boards:

- Raise the maximum board temperatures to the specified maximum ambient
  temperatures for their PHYs plus the expected temperature bias of the
  board
- Raise the maximum controller temperature to 90 degrees
- Lower the minimum temperatures to 0 degrees
- Widen the voltage tolerances to at least +/- 10%

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agosfc: Fix sign of efx_mcdi_poll_reboot() error in efx_mcdi_poll()
Ben Hutchings [Fri, 19 Feb 2010 13:29:27 +0000 (13:29 +0000)]
sfc: Fix sign of efx_mcdi_poll_reboot() error in efx_mcdi_poll()

efx_mcdi_poll() uses positive error numbers, matching the MCDI
protocol.  It must negate the result of efx_mcdi_poll_reboot() which
returns the usual negative error numbers.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agonet-sysfs: Use rtnl_trylock in wireless sysfs methods.
Eric W. Biederman [Fri, 19 Feb 2010 13:23:47 +0000 (13:23 +0000)]
net-sysfs: Use rtnl_trylock in wireless sysfs methods.

The wireless sysfs methods like the rest of the networking sysfs
methods are removed with the rtnl_lock held and block until
the existing methods stop executing.  So use rtnl_trylock
and restart_syscall so that the code continues to work.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>